    <div class="search_box">
      <form class="form" action="{:U('Muuevent/Index/lists')}" method="post">
        <div class="search_form_box">
            <div class="input-group">
              <input type="text" class="form-control input-lg" name="keyword" placeholder="搜索活动" value="{$keyword}">
              <span class="input-group-btn">
                <button class="btn btn-warning btn-search" type="submit"> <i class="icon icon-search"></i> 搜 索 </button>
              </span>
            </div>
        </div>
        <ul class="event_public_btn">
	        <volist name="custom_nav" id="vo">
	        	<li><a href="{$vo.url}">{$vo.icon} {$vo.title}</a></li>
	        </volist>
	     </ul>
      </form>
	 </div>